Posted by Taras_96 on 04/24/07 15:48

Hi all,

I've been using debug_backtrace() for a while to provide stack traces
for a custom logging function. Today was the first time I've got the
following error:

"Notice: Undefined index: file in E:\webroot\lib\errors.php on line
341

Notice: Undefined index: line in E:\webroot\lib\errors.php on line
341"

related to the following code:

$vDebug = debug_backtrace();
$vFiles = array();
for ($i=0;$i<count($vDebug);$i++) {
// skip the first one, since it's always this func
if ($i==0) { continue; }
$aFile = $vDebug[$i];
var_dump($aFile);
$vFiles[] = '('.basename($aFile['file']).':'.
$aFile['line'].')';
} // for
return implode(',',$vFiles);

I checked the PHP documentation for this function, and to my surprise
found that:

"The *possible* returned elements are as follows:", ie: 'file' and
'line' wont always be returned. When are these elements returned, so
that I can make the function do something useful when file/line isn't
returned?

Thanks

Taras

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